| Summary: | 碩士 === 世新大學 === 資訊管理學研究所(含碩專班) === 91 === Because of the growth and the popularization of the Internet, various kinds of applications are available and developed quite rapidly in many areas, such as commerce, education, and entertainment...etc. In the area of commerce, people call the application on the Internet “E-Commerce”. The E-commerce is a very hot headline, but some issue and challenge come along at the same time, for example, Integrity, Authentication, Confidentiality, and Non-repudiation. There are many ways to solve them, the most famous one of them is PKI (Public Key Infrastructure). The concept of Certificate is the most important part of PKI, but it gets some defects in CRL (Certificate Revocation List). This article proposes a new method that could improve the processes of CRL. At the same time, this article proposes a scheme, SMS On-line Structure, that could solve some secure problems of CRL issuing time gap, and increase the application of certificates. Finally, we propose an E-Commerce scheme base on PKI, which combines concept of Cookie and Attribute Certificate in Privilege Management Infrastructure (PMI). This scheme can achieve the goal of personal service and authorization easily.
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